66AK2E05: Overall height tolerance

Carlo

Expert 7715 points

Part Number: 66AK2E05

Hi team,

Good day.

What is the overall height tolerance of the top of the package from the mounting plane of 66AK2E05XABDA4?

Regards,
Carlo

over 3 years ago

0 Rex Chang over 3 years ago

TI__Guru 50170 points

Hi, Carlo,

Does the last page of the datasheet ,package outline page, have the info you want?

www.ti.com/.../66ak2e05.pdf

Rex

0 Tom Johnson 16214 over 3 years ago in reply to Rex Chang

TI__Mastermind 46460 points

Carlo,

The drawing at the end of the Data Manual indicates that this height is 3.55mm maximum.

Tom

0 Carlo over 3 years ago in reply to Tom Johnson 16214

TI__Expert 7715 points

Hi Tom and Rex,

Thank you for your reply.

Our customer is trying to design a heatsink that will sit over top of the chip and compress a thermal pad against the top of the chip. In order to size that gap and the thermal pad, it's helpful to know how much the height can vary. Is it possible to get the minimum height as well?

Regards,
Carlo

0 Tom Johnson 16214 over 3 years ago in reply to Carlo

TI__Mastermind 46460 points

Carlo,

There is no additional information beyond the figure referenced. Because of variability in thickness of the package and of the BGA balls during reflow and because the planarity cannot be guaranteed, we recommend that heat sink solutions be mounted on a spring or compression system that can tolerate the variations.

Tom

Processors

Processors forum

66AK2E05: Overall height tolerance